US4422791A - Universal joint construction for use in anchoring a surface platform to a sea bed - Google Patents

Universal joint construction for use in anchoring a surface platform to a sea bed Download PDF

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Publication number
US4422791A
US4422791A US06/366,207 US36620782A US4422791A US 4422791 A US4422791 A US 4422791A US 36620782 A US36620782 A US 36620782A US 4422791 A US4422791 A US 4422791A
Authority
US
United States
Prior art keywords
ball cup
universal joint
cup
joint according
inner bottom
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/366,207
Other languages
English (en)
Inventor
Helmut Lausberg
Karl-Werner Pommerening
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Assigned to M.A.N. MASCHINENFABRIK AUGSBURG-NURNBERG AKTIENGESELLSCHAFT reassignment M.A.N. MASCHINENFABRIK AUGSBURG-NURNBERG AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LAUSBERG, HELMUT, POMMERENING, KARL-WERNER
Application granted granted Critical
Publication of US4422791A publication Critical patent/US4422791A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4406—Articulated towers, i.e. substantially floating structures comprising a slender tower-like hull anchored relative to the marine bed by means of a single articulation, e.g. using an articulated bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0666—Sealing means between the socket and the inner member shaft
    • F16C11/0676—Sealing means between the socket and the inner member shaft allowing operational relative movement of joint parts due to sliding between parts of the sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/30—Ships, e.g. propelling shafts and bearings therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y10T403/32737—Universal ball and socket including liner, shim, or discrete seat

Definitions

  • the invention relates in general to sea platform anchors and in particular to a new and useful universal joint provided with shoes at the bottom end of a connection between a surface platform and a foundation anchored on the bottom of the sea as well as to a method for replacing the shoes.
  • the invention ensures the full operating and sliding capacity of the ball cups in one another under severe conditions for at least 30 years or longer, by providing better protection for the sliding surfaces and sliding layers and by obtaining and maintaining a floating friction, as well as by a design of the shoes which facilitates the replacement, as well as by an advantageous method for replacing the shoes.
  • the invention concerns a universal joint with shoes whose top outer ball cup embracing the bottom inner ball cup is provided with an air or gas filled bell, open at the bottom, as well as with a circular seal bearing on the inner ball cup.
  • the invention provides spherical supporting plates with trapezodial contours and sliding layers secured on the plates and sliding on the inner surface of the surrounding outer ball cup.
  • the plates are bordered on all sides by border strips of the supporting plates and are provided with border seals embedded on all sides along the border strips in their corner grooves. The strips bear tightly on the surface of the outer ball cup.
  • the arrangement of the shoes on the inner ball cup permits access and replacement from the inside of the universal joint.
  • the insertion of the sliding layer in a frame enclosed on all sides by the border strip ensures a safe reception against displacement and prevents the sliding material from flowing, if it consists of PTFE.
  • the individual shoes adjoining each other in a ring-shaped, spherical zone, so that the supporting plates of the shoes, which are trapezoidal in a top view, bear tightly with their border seals embedded in the corner grooves of the border strips on the lateral border seals of the laterally adjoining shoes.
  • the supporting plates of the shoes are guided slidingly and removably in guideways in polar directions, whereby the guideways are formed by the respective adjoining supporting plates, or guide bars serve as guideways which are secured on the surface of the inner ball cup extending in polar directions and on which the supporting plates can slide along in corresponding grooves on the underside.
  • the arrangement can also be such that guide bars are provided for every second of the laterally adjoining supporting plates of the shoes. If the shoes are arranged side by side in a ring-shaped zone, as suggested by the invention, only every second supporting plate requires a guide bar as a guideway, because the supporting plates in between guide themselves on the supporting plates guided by the bars, with their lateral border seals adjoining each other.
  • all supporting plates of the shoes can be provided with guide bars.
  • the removal of the supporting plate at the top of the inner ball cup and the reintroduction of a replacement supporting plate is always facilitated, and the exact fit of the supporting plates is ensured.
  • the trapezodial supporting plates of the shoes are tapered alternately at the top and bottom. They can have either the same width or the supporting plates of the shoes guided removably on guide bars can be much narrower than the adjoining supporting plates.
  • Another advantageous design according to the invention includes supporting plates which bear with their border seals on their underside on a circular boundary border strip arranged on the inner ball cup, so that the border seals are enclosed in U-form in this region, while they can be pressed by adjusting means on their top sides in the direction of the circular boundary border strip and be kept under this pressure.
  • This type of fastening permits the pulling out of the supporting plates of the shoes at the top by loosening the adjusting means, while they are kept in the operating state under the action of the pressure in such a way that a pressure is constantly exerted on the border seals, and their tight bearing on the sliding surface of the outer ball cup is thus ensured.
  • the adjusting means comprise pressure ring-segments which bear on the upper sides of the border seals and are pressed-on by means of pressure screws arranged in intervals.
  • the arrangement can also be such that the pressure screws do not act directly on the pressure ring segments, but on pressure claws whose pressure cams bear on the pressure ring segments.
  • the pressure screws for the pressure claws and the pressure ring segments can be adjustable in threaded bores of pressure plates, which are secured on the circular upper edge surface of the inner ball cup, distributed over the circumference. It is of particular advantage if the supporting plates of the shoes, which are guided removably on guide bars, are pressed on by means of pressure screws arranged on separate pressure plates and acting on these supporting plates.
  • the shoes are constructed so that a floating friction is achieved and maintained.
  • the sliding layers are provided with depressions to receive a lubricant. These depressions can only comprise one countersink for each shoe, or they can be divided into several countersinks. It is important that the inner ball cup is provided with lubricant feed bores which open into the depressions in the sliding layers, and that the lubricant feed bores are connected to a high pressure lubricant supply. This makes it possible to produce and maintain in the depressions of the sliding layers such a high lubricant pressure that surface contact of the sliding surfaces is avoided and floating contact is obtained. This results in a considerable extension of the life of the shoes.
  • the inner ball cup is provided with additional lubricant discharge bores, which open into border strips which are lower than the sliding layers and border the latter.
  • additional lubricant discharge bores which open into border strips which are lower than the sliding layers and border the latter.
  • a cavity surrounding the sliding layer like a bank which is defined on the outside by the circumferential border strips. Due to the fact that the additional lubricant discharge bores open into these spaces, the lubricant is returned into the cycle.
  • this circular seal is arranged in the bottom edge zone of the outer ball cup and comprises a plurality of ring seals arranged at small distances from each other. They are so designed according to another feature that each of the ring seals include a closed ring-shaped hollow body of an elastic material, and that these hollow bodies when inserted into annular grooves can be inflated with a gaseous or liquid pressure medium.
  • the inflatable ring-shaped hollow bodies have a substantially rectangular cross-section with a possible large pressure surface bearing tightly on the surface of the inner ball cup, and are provided on their back with projecting border strips which engage correspondingly dimensioned back tapers of the annular grooves.
  • Another suggestion of the invention aims at keeping the bottom region of the sliding surface of the inner ball cup, in which the inflatable ring-shaped sealing bodies of the outer ball cup slide, absolutely clean and free of impurities.
  • a second bell which is open at the top, is arranged inside the air or gas filled bell with a bottom opening in such a way that it adjoins with its closed bottom part the bottom edge of the bottom inner ball cup.
  • This design has the effect that the bottom region of the inner ball cup is also kept free of sea water, so that contamination by sea water splashes is impossible, and overflowing lubricant can be absorbed and returned into the cycle.
  • the procedure according to the invention for replacing the shoes of the inner ball cup in the design as described here consists in that the high pressure lubricant supply of the shoes to be replaced is shut off and its adjusting means are loosened and removed, and that the shoes to be replaced are removed at the top by means of a removing tool used instead of the adjusting means, and that the new shoes to be inserted are then introduced by means of this tool. It is also suggested that the ring-shaped inflatable hollow body seals are so inflated before the start of the replacement that the air or gas pressure can be reduced in the space above the seals to atmospheric pressure.
  • a universal joint for use in anchoring a surface platform to a sea bed which comprises an outer top wall cup having a bottom opening with an edge around the opening and an inner bottom ball cup disposed within the outer top cup enclosing the bottom thereof and having an exterior in slidable engagesment with the interior of the outer top ball cup, and further including a bell forming an enclosed pressure space between the exterior of the two cups and ring seal bearings defined between the outer and inner cups adjacent the edge of the outer cup wherein the exterior of the inner cup has a plurality of shoes thereon bearing in sliding engagement against the interior of the outer cup and comprising a supporting plate having a substantially trapezoidal contour secured to the inner cup with a sliding layer within the contour secured to the plate and slidable on the interior of the top ball cup and including a border seal extending around the periphery of the supporting plates.
  • a further object of the invention is to provide a universal joint construction which is simple in design, rugged in construction and economical to manufacture.
  • FIG. 1 is a partial elevational and partial sectional view of a universal joint constructed in accordance with the invention
  • FIG. 2 is a partial sectional view of the ball cup shown in FIG. 1 on a slightly enlarged scale;
  • FIG. 3 is a partial elevational view showing the sliding layers on the inner ball cup
  • FIG. 4 is a partial sectional view of the outer ball cup showing the portion indicated in FIG. 3;
  • FIG. 5 is a section taken along the line 5--5 of FIG. 3;
  • FIG. 6 is a partial sectional view of FIG. 2 but on a larger scale
  • FIG. 7 is a view similar to FIG. 4 but on a larger scale
  • FIG. 8 is a view similar to FIG. 5 but on a larger scale.
  • FIG. 9 is a partial sectional view similar to FIG. 2 and showing the ring seal.
  • the universal joint comprises an outer top ball cup 5 having a bottom opening with an edge around the opening and an inner ball cup 3 disposed within the outer top ball cup and closing the bottom thereof.
  • the inner bottom ball cup has an exterior in slidable engagement with the interior of the outer top ball cup.
  • a bell 8 is provided which forms an enclosed pressure space 9 between the exterior of the outer top ball cup and the inner bottom ball cup.
  • the ring seal bearing 50 is shown in more detail in FIGS. 2 and 9 and is provided on the outer ball cup and it provides a plurality of ring seals around the periphery of the inner ball cup to seal between the cups.
  • the exterior of the inner ball cups has a plurality of shoes thereon designated 12 and 13 in the form of spherical segments which are arranged in alternate arrangement around a portion of the periphery of the inner ball cup 3.
  • the shoes comprise a supporting plate 14 and 15 having substantially trapezoidal and triangular contours respectively which are secured to the inner cup 3 and carry within their outline a sliding layer 16 or 17 which are in slidable engagement with the interior surface of the outer ball cup 5.
  • a border seal 19 extends around the periphery of each of the supporting plates 14 and 15.
  • FIG. 1 a part of the foundation anchored on the bottom of the sea is designated 1, on which the bottom inner ball cup 3 is detachably mounted by means of the basic construction including a foundation plate 2, cylinder 2a and cylinder plate 2b.
  • the inner ball cup 3 is embraced by the top and outer ball cup 5 which is connected over a connecting construction 6 with a tower 7 carrying the surface platform.
  • To the outer ball cup 5 is connected over platform type circulator ring disks 10 air bell 8 within which space 9 is filled with air, so that the water level W is attained.
  • the water level is monitored in a manner not shown here, and at inadmissible deviations of level, the air filling space 9 is filled from a fluid pressure source so adjusted that the nominal water level is attained again.
  • the additional bell 4 prevents the inner ball cup 3 from being wetted with sea water again in its bottom region, and it absorbs the overflowing and excess lubricant, which is returned directly into the cycle.
  • the universal joint is so dimensioned that one can comfortably walk in its interior.
  • FIG. 2 and the following FIGS., 12 and 13 denote the shoes and 14 and 15 the corresponding supporting plates.
  • wide shoes 12 alternate with narrow shoes 13.
  • the details of shoes 12, 13 can be seen from FIGS. 3, 5 and 8.
  • the supporting plates 14 and 15 are provided with circumferential or peripheral border strips 18 embracing a central sliding layer 16 on all sides, which in turn are surrounded by border seals 19. Border strips 18 thus define substantially closed contour areas for the layers 16 of each plate.
  • the narrow shoes 13 (FIGS. 3, 5 and 8) are guided on guide bars 20, which are secured by means of screws 21 on the inner ball cup 3.
  • grooves 22 on the underside of supporting plates 15 serve to receive guide bars 20.
  • a pressure in the direction of circular boundary border strip 23 is exerted by the adjusting means of the inner ball cup 3 (see FIGS. 2, 3 and 6).
  • the details of the adjusting means can be seen primarily from FIGS. 4, 6 and 7.
  • the wide shoes 12 and their supporting plates 14 are pressed on their inner end faces by means of pressure screws 25 against boundary border strip 23, while pressure screws 31 transmit the pressure to the narrow shoes 13 and their supporting plates 15.
  • These pressure screws 25 and 31 can be adjusted in bores of pressure plates 20, which are screwed by means of screws 30 on the upper end face 3a of the inner ball cup 3.
  • four circular cylindrical seals D1, D2, D3 and D4 are arranged in the bottom region of the outer ball cup 5, which comprise inflatable ring-shaped hollow bodies 35 of an elastic material with a substantially rectangular cross-section. These are inserted in annular grooves 36 and held therein by means of their projecting border strips 38 which engage back tapers of grooves 39. For the introduction of compressed air or gas are provided feeds 41. By inflating the seals, space 40 between the two ball cups can be sealed off from the high pressure in space 9 of air ball 8 so that the air pressure in interior 11 of the universal joint no longer or hardly exceeds atmospheric pressure after removal of individual shoes.
  • the seal arrangement D1 to D4 is actuated by inflating them, so that the pressure in space 40 is reduced. Then the corresponding adjusting means of the shoes to be replaced are loosened and removed, so that the removal tools (not shown) can be attached. These are also used for introducing the replacement shoes after removal of the old shoes and are then replaced again by the adjusting means.
  • the shoes can, of course, be removed by loosening the adjustment means in the form of plates 29 and claws 27, and lifting the plates upwardly, one at a time, above the upper edge of the lower inner ball cup 3. The process is reversed for inserting new shoes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Sealing Devices (AREA)
US06/366,207 1981-04-27 1982-04-07 Universal joint construction for use in anchoring a surface platform to a sea bed Expired - Fee Related US4422791A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3116626 1981-04-27
DE19813116626 DE3116626A1 (de) 1981-04-27 1981-04-27 Mit gleitschuhen versehenen kugelgelenk am unteren un oberen ende einer verbindung zwischen einer ueberwasserplattform und einem am meeresboden verankerten fundament sowie verfahren zum auswechseln der gleitschuhe

Publications (1)

Publication Number Publication Date
US4422791A true US4422791A (en) 1983-12-27

Family

ID=6130888

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/366,207 Expired - Fee Related US4422791A (en) 1981-04-27 1982-04-07 Universal joint construction for use in anchoring a surface platform to a sea bed

Country Status (5)

Country Link
US (1) US4422791A (de)
JP (1) JPS57184114A (de)
DE (1) DE3116626A1 (de)
FR (1) FR2504619B1 (de)
GB (1) GB2097463B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040090297A1 (en) * 2000-07-24 2004-05-13 Gunnar Hafskjold Arrangement and method for installing a subsea transformer
CN114560050A (zh) * 2022-03-16 2022-05-31 中国华能集团清洁能源技术研究院有限公司 一种海上风电基础

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405716A1 (de) * 1984-02-17 1985-09-05 Bilfinger + Berger Bauaktiengesellschaft, 6800 Mannheim Kugelgelenk zur verbindung eines eine ueberwasserplattform tragenden turmes mit einem auf dem meeresboden gegruendeten fundament

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2286122A (en) * 1941-02-12 1942-06-09 William A Stapp Steam pipe ball joint coupling
US3306636A (en) * 1964-10-12 1967-02-28 Ralph F Hereth Flexible pressure-compensated pipe coupling
AT262700B (de) * 1964-02-25 1968-06-25 Deutsche Steinzeug Gelenkverbindung für Rohre
US4139221A (en) * 1975-10-06 1979-02-13 Keith Shotbolt Ball and socket joint

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020956A (en) * 1959-01-28 1962-02-13 De Long Corp Apparatus and method for connecting an access caission to a submerged well casing
FR1519891A (fr) * 1967-02-24 1968-04-05 Entpr D Equipements Mecaniques Perfectionnements apportés aux structures du genre des plates-formes pour travaux sous-marins
US3735597A (en) * 1972-02-24 1973-05-29 Exxon Production Research Co Hinge system for offshore structure
GB1513581A (en) * 1975-07-17 1978-06-07 Taylor Woodrow Const Ltd Constructions for deep water installations
DE2549859C3 (de) * 1975-11-06 1979-03-22 Bilfinger + Berger Bauaktiengesellschaft, 6800 Mannheim Verbindung zwischen einer Überwasserplattform o.dgl. und einem Fundament
DE2755592C2 (de) * 1977-12-14 1983-02-10 Bilfinger + Berger Bauaktiengesellschaft, 6800 Mannheim Verbindung zwischen einer Überwasserplattform o. dgl. und einem Fundament
DE2847157C2 (de) * 1978-10-30 1983-01-05 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Überwasserplattform mit einem Turm, der mittels einer Gelenkverbindung allseitig schwenkbar an einem am Meeresgrund verankerten Fundament angelenkt ist

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2286122A (en) * 1941-02-12 1942-06-09 William A Stapp Steam pipe ball joint coupling
AT262700B (de) * 1964-02-25 1968-06-25 Deutsche Steinzeug Gelenkverbindung für Rohre
US3306636A (en) * 1964-10-12 1967-02-28 Ralph F Hereth Flexible pressure-compensated pipe coupling
US4139221A (en) * 1975-10-06 1979-02-13 Keith Shotbolt Ball and socket joint

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040090297A1 (en) * 2000-07-24 2004-05-13 Gunnar Hafskjold Arrangement and method for installing a subsea transformer
US6985061B2 (en) 2000-07-24 2006-01-10 Vetco Aibel As Arrangement and method for installing a subsea transformer
CN114560050A (zh) * 2022-03-16 2022-05-31 中国华能集团清洁能源技术研究院有限公司 一种海上风电基础

Also Published As

Publication number Publication date
FR2504619B1 (fr) 1986-11-28
GB2097463B (en) 1984-12-19
JPS57184114A (en) 1982-11-12
GB2097463A (en) 1982-11-03
DE3116626A1 (de) 1982-11-11
FR2504619A1 (fr) 1982-10-29

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AS Assignment

Owner name: M.A.N. MASCHINENFABRIK AUGSBURG-NURNBERG AKTIENGES

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:LAUSBERG, HELMUT;POMMERENING, KARL-WERNER;REEL/FRAME:003987/0371

Effective date: 19820318

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STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 19871227